Satellite Surveillance: Domestic Issues
http://www.fas.org/sgp/crs/intel/RL34421.pdf
Reconnaissance satellites, first deployed in the 1960s for spying on potential adversary countries, were later used by civilian agencies to assist with mapping, disaster relief, and environmental tasks. Transfer of civilian use of satellites to the Department of Homeland Security raises issues of privacy and civil liberties. This report discusses legal issues surrounding the use of reconnaissance satellites for homeland security functions. From the Congressional Research Service, posted by the Federation of American Scientists.